INGREDIENTS
1 cup
unsalted butter at room temperature
1 cup
granulated sugar
1 cup
packed light brown sugar
1
large egg
1/2 cup
coconut oil
2 tbsp
heavy cream
1 tsp
vanilla
1 tbsp
plus 2 tsp root beer concentrate
3 1/2 cups
flour
1 tsp
cream of tartar
1 tsp
baking soda
1/4 tsp
salt